Carbureting device.



I. LAVENDER. GARBURETINGDEZVIGB.

APP'L-IOATION FILED DEO. 3, 1910. .RENEWED NOV. 14, 1912.

Patented Deo. 24, .19121 State of Iowa,

j UNITED STATES PATENT OFFICE.

IEA LAVENDER, or WEBSTER CITE',l IoW-A, ASSIGNOE or ONE-HALE DYsAET, orWEBSTER, CITY, IOWA.

Tomooroa ROY CARBURETING DEVICE l v Specification of Letters Patent.Application led December 3. 1910, Serial No. 595,468.

Patented'Dec. 24, 1912. Renewed November 14, 1912. Serial No.' 731,433.

To all whom it may concern:

Be it known that I, IRA LAvEIsDEn, a citizen ofthe United States, and aresident of Webster City, county .of Hamilton, and have invented certainnew and useful Improvements in Carbureting Devices, of which thefollowing isa. specification.

. -My' invention relates toimprovements in carbureting devicesespecially adaptedfor 4use in conjunction with internal combustionengines.

The object of my 'invention is the provisionjof a carburcting device bymeans of which a combustible mixture of constant proportions of air andhydro-carbon vapor will be supplied to theengine at all speeds of thelatter,

A further object is the provision of a carbureter of the character`mentionedl which will be of improved construction and etiicient inoperation.

Other objects will appear hereinafter.,

With these objects in vie-w my invention consists in a. carburetingdevice characterized as labove mentlonedand in certa-1n details .ofconstruction and arrangements of Aparts all as will be hereinafter morefully described and particularly pointed out in the appended claim. v

y invention will be 'morereadily understoodby reference to the.laccompanying' V drawing forming a part of this speciiication and inwhich- .Y Y Figure 1 is a fro-nt elevation of'a carbureter Vembodyingthe preferred form of minventionF ig. 2 is a central section there'o.,

and Fig. 3 is a transverse section taken on line fc-a2 of Fig. 2.4

The preferredV form ofmy invention as illustrated in the drawingscomprises a casing" or body formedv in two parts l and 2,

said parts being preferably cylindrical in -form, the same being-rigidlysecured to gether with their open ends registering by meanssof bolts 3or other suitable securing device'v extending through circumferentialanges formed upont-he contiguousedges of saidparts. Arranged in thepart1 of the casing. isan airvmeter of suitable design, that preferablylemployed comprising the measuring chaniber 4, in -`which the' diskpiston 5 is located and operates. The Ineasuring chamber 'communicateswith the air intakeport 6y which is open to the outside adapted tobeconnected with orto communicate with the piston chamber of the engine.

in conjunction with which the carbureter is used. The operation of theair meter 1s such, asv 1s well known, that the suction measured amountvof air from the port 6 to the`port-7.

Mounted centrally in the" outer head of the casing `part 2 is aninwardly projecting stud'slraft 8 upon which is rotatably mount'- ed -asleeve 9. Formed at one end of the sleeve 9 is an eccentric l0 andformedy at the lother extremity thereof a circumferential dlangell. Thelatter connected with the disk piston 5 of the air meter by means of anarm 5 which'projects in the usual manner from said pis-ton, the outer.extremity thereof loosely engaging'a perforation 11 formed for thereception' thereof in the fiange 11; the arrangen'ient belng such thatupon rotation of the piston 5`caused, as above mentioned, by the enginesuction, corresponding rotary movement will be imparted to said flangeandhence to' the sleeve 9 and eccentric 10. Loosely embracing-the`eccentric 10 is a .rectangular yoke 12, the arrangement being suchV thatis operatively latmosphere and the exhaust port 7 which is ro'tation ofsaid eccentriceffects vertical .res

lciproeation of said rectangular yoke, the eccentric being adapted toeffect the elevation of the same and a tension spring 13 effecting thepositive return movementthereof. Upwardly projecting from the upper sideof the yoke 12vi's a piston 14 which is adapted.

for operation in a cylinder 15 'formed in the casing2.- Project-lng fromthe opposite side of said'i'ectangular yoke is an arm 16 which iscoaxial 'with the piston 14, the lower or outer reducedl end ofsaid arm16 slidably engaging a guide screw 17 threadedin the under side of thecasing 2.v The screw 17 is adapted to be adjusted for engagementv withthe shoulder 18 formed upon the arm 16 this provision, as will beobserved, affording means for the adjust-ment of the amplitude ofmovement of the yoke 12 and hence of the piston'14, suchadjustment beingmade possible by reason of the loose engagement of said yoke with theeccentric 10, as clearly illustrated in Fig. 3. VW'ith the arrangl mentvdisclosed by threading said screws 17 l' inwardly the stroke of thepist-on will be shortened and hence the effectiveness correspondinglylessened, outward threading of said scrciv evidently effecting oppositeresults.

.Formed in the upper end or sidepf the casing part l is a tortuousliquid fluid passage lt) one extremity of said passage ter- V ininatingin a nipple which affords means of connection with a source of liquidtiuid sulviply, the opposite extremity of said paS- sage communicatingby means of a pipe 21 with a nipple 2Q which communicates with themeasuring chamber -of the air meter. The upper extremity ofthe cylinder15 is in open communication, as illustrated, with said passage 19. thelatter being provided at opposite sides ol said cylinder with checkvalves preferably ot' the ball type Q3 and 24 which are ada plednormally to seat in valve seats 25 and 2li respectively. Access to saidvalves for cleaning or repairing may be gained through screw plugs 27.Said Valves are so arranged, as will be observed, that upon downwardmovement of the pist-pn 14' a partial 'vacuum' will be created in thepassage 19 between the valves 23 and 2e aiid` which will effect thedrawing of liquid fuel past the valve Q3, the latter being arranged soasv to permit of such passage. Upon said movemento said piston the valve*24 Will evidently remain seated. Upon return movement of said piston aportion` of the liquid fuel drawn into the portion of the passage 19intermediate said valves and into the upper end portion of the cylinder15 will be forced therefrom past the valve 24 into the pipe 2l andthence into the air meter for mixture with the air contained therein fordelivery to the combustion chamber of the engine. Tith Athis arrangementthen it will be seen that reciprocation of the iston 14 such as iscausedby operation of t e piston 5 of the metei" will eiect the delivery ofthe fuel to the latter. Said piston 14 being operatively connected asshown and described with said meter the air delivered by said meter andthe liquid fuel fed to said meter for mixture with said air 1Will' beconstantly in the same proportions; acceleration in the movement of thepiston 5 as caused 'by an increase in speed in the'engine will eect acorresponding acceleration in speed of thev piston let so that anincreased supply of air delivered by the meter will eect4 a corre-Leashes sponding increase in the supply of liquid fuel, the speed of thepiston 14, beinggoverned directly by that of the piston By reason of theadjustment afforded by the screws 17 the proportion of liquid fuel tothat of air delivered to the engine may be varied in order that amixture of exactly Y. proper proportions may be formed. W ith a devicethen of a construction as set forth a proper mixture may at all timesbe. formed and this proportion maintained at all speeds of the engine.

While l have illustrated and described the preferred form of mycai'bureter l do not` wish to be limited thereto as there inightbc manychanges made in thc details ofl con struction and the arrangements ofparts described without departing from tlie spirit of the invention ascoinprehended within the scope of the appended claim. V

Having described my invention what l deem as new and desire to secure byLetters Patent is ln a carburc'ting device, the combination of an airmeter comprising a rotatable mem'- ber adapted to be rotated by thesuction created by an internal combustion engine when operating, saidrotatable member be- 'ing adapted when rotated to deliver air from anair intake port in communication with the outside atmosphere to anoutlet port,

adapted to communicate with the combus-` tion chamber of t-h'e engine; arotatable eccentric; an operative connection between said rotatablemember of lsaid meter and said eccentric whereby rotation of theforniereffects corresponding rotation of said eccentric; a rectangular yokeloosely embracing said eccentric; a piston carried by said yoke; aliquid fuel passage leading lo said meter, one end of the cylinder ofsaid piston communicating with said passage; and a check valve in saidpassage at either side of said cylinder, whereby reciproeation (it saidpiston effects the forcing of liquid fuel in said passage toward saidmeter, substantially as described.

ln testimony whereof l have signedl my name to this specification in thepresence ol two subscribing witnesses.

H. O. CUTLER, E. E. MASON.

Genie: of this patent may se obtained for v'e cents each, by addressingthe.

` Washington, D. C.

Commissioner ofl Patents,

